Cleanup remaining class/struct fwd declarations

native_client_sdk/src/libraries/nacl_io/socket/unix_event_emitter.h

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef LIBRARIES_NACL_IO_SOCKET_UNIX_EVENT_EMITTER_H_
 #define LIBRARIES_NACL_IO_SOCKET_UNIX_EVENT_EMITTER_H_
 
 #include "nacl_io/fifo_interface.h"
 #include "nacl_io/stream/stream_event_emitter.h"
 
 #include "sdk_util/macros.h"
 #include "sdk_util/scoped_ref.h"
 #include "sdk_util/simple_lock.h"
 
 namespace nacl_io {
 
 class UnixEventEmitter;
-class Node;
 
 typedef sdk_util::ScopedRef<UnixEventEmitter> ScopedUnixEventEmitter;
 
 class UnixEventEmitter : public StreamEventEmitter {
  public:
   uint32_t ReadIn_Locked(char* buffer, uint32_t len);
   uint32_t WriteOut_Locked(const char* buffer, uint32_t len);
 
   uint32_t BytesInOutputFIFO();
   uint32_t SpaceInInputFIFO();
@@ skipping 12 matching lines @@
   virtual FIFOInterface* out_fifo() = 0;
   void UpdateStatus_Locked();
 
  private:
   DISALLOW_COPY_AND_ASSIGN(UnixEventEmitter);
 };
 
 }  // namespace nacl_io
 
 #endif  // LIBRARIES_NACL_IO_SOCKET_UNIX_EVENT_EMITTER_H_